Top impact of helmet

Finite element model for a helmet subjected to drop test. In this case the top area of the helmet faces the flat anvil and dropped from a height of 2.5 m on a semispherical anvil. The head form and helmet have an approximately velocity of 7 m/s before impact. With this we are able to predict the accelerations on the head and are able to determine how detrimental these accelerations are to head injury.

Side impact of helmet

Same as above but head is dropped from the side on flat anvil. One interesting thing to note is the angular velocity to the head after impact. This angular velocity to head may cause injury to the neck

Impact of bullet on helmet

The objective of the impact analysis of the helmet was to check neck injury when bullet hits the helmet. The work involved the modelling of neck, helmet and the head to assess the neck injury. Using momentum conservation velocity of bullet was imparted to the helmet. The maximum axial force on neck and the acceleration HIC (head injury criterion) on head were evaluated to assess the extent of injury.

Impact of helmet on windscreen

The windscreen of a car is impacted by pedestrian and riders of a two-wheeled vehicles in a large proportion of road traffic crashes. Acceleration history and the forces experienced by the impactor (head with of without helmet) are of significance in rider and safety prediction. This simulation shows the impact of head with helmet on windscreen from outside the car.

Car impact with a pedestrian, frontal impact

In impact of car with pedestrian and two-wheeled rider the head of rider hits the bonnet and windscreen of car causing severe injury to head (depending on velocity). This simulation shows car hitting a pedestrian at 50 Km/hr and is rigid body simulation in madymo.

view simulation (1622 KB)